摘要
文中以黑龙江省依兰松花江公路大桥为例,通过建立有限元模型,结合经典力学理论,对不同合龙方案所引起的不平衡弯矩与悬臂端位移进行了分析;在此基础上,提出了合龙钢束分批张拉的优化措施,使得关键部位的受力与位移均达到最佳状态。本文所得结论可为同类型桥梁的施工提供一定的借鉴作用,以确保桥梁结构的安全性。
Taking Yilan Songhua River Highway Bridge in Heilongjiang Province as an example, the unbalanced bending moment and cantilever end displacement caused by different closure schemes are analyzed by establishing finite element model and combining classical mechanics theory. On this basis, the optimization measures of closure steel bundle tension in batches are put forward, so that the stress and displacement of key parts can reach the optimum state. The conclusions drawn in this paper can provide some reference for the construction of similar bridges to ensure the safety of bridge structures.
作者
吴迪
高庆飞
张坤
秦卫军
王瑞
WU Di;GAO Qingfei;ZHANG Kun;QIN Weijun;WANG Rui(China Railway Construction Bridge Engineering Bureau Group 4th Engineering Co., Ltd., Harbin 150000, China;School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China;Jilin Provincial Transport Scientific Research Institute, Changchun 130012, China;Shaanxi Hualuda Highway Survey and Design Co., Ltd., Xi’an 710000, China)
出处
《低温建筑技术》
2019年第5期142-145,共4页
Low Temperature Architecture Technology
基金
吉林省交通运输科技计划项目:既有空心板梁桥横向预应力碳纤维板加固技术研究(2015-1-14)
关键词
大跨径桥梁
预应力混凝土连续梁桥
悬臂施工
合龙工艺
分批张拉
large -span bridge
prestressed concrete continuous girder bridge
cantilever construction
closure technology
batched tensioning
